Influence of B4C nano particles on microstructure and mechanical properties of Al6063 alloy composites

2021 ◽  
Author(s):  
B. Byra Reddy ◽  
T. P. Bharathesh
Keyword(s):  
Mechanical Properties ◽  
Nano Particles ◽  
Microstructure And Mechanical Properties ◽  
Al6063 Alloy

Microstructure and Mechanical Properties of In Situ Cast Aluminum Based Composites Reinforced with TiC Nano-Particles

2020 ◽  
Vol 985 ◽  
pp. 211-217
Author(s):  
Wojciech Maziarz ◽  
Piotr Bobrowski ◽  
Anna Wójcik ◽  
Agnieszka Bigos ◽  
Łukasz Szymański ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Coefficient Of Thermal Expansion ◽  
Nano Particles ◽  
Cast Aluminum ◽  
Casting Method ◽  
Microstructure And Mechanical Properties ◽  
Transmission Electron ◽  
Cast Composites ◽  
In Situ Formation

This work concerns microstructure and mechanical properties investigations of aluminum based composite strengthened with the TiC particles being in nanometer size. The composites were fabricated by the casting method combined with in-situ formation of TiC particles. Applying a suitable composition of components and moderators of SHS reaction which occur during casting, it was possible to cast the samples with TiC particles of size of 150 nm and faceted shape. Microstructure investigations using scanning and transmission electron microscopy (SEM and TEM) allowed to identified the distribution of TiC particles and their preferred location in the microstructure of composites. Also the additional precipitates with different size and shape were identified in investigated samples. Significant increase of strength was observed in in-situ cast composites in comparison to Al-1000 alloy mainly due mainly due to coefficient of thermal expansion and elastic modulus mismatch between the reinforcements and the metal matrix, Hall-Pecht relation and also in minority the Orowan effect.

Role of Cr and Ti Contents on the Microstructure and Mechanical Properties of ODS Ferritic Steels

2008 ◽  
Vol 59 ◽  
pp. 308-312 ◽  
Author(s):  
Zbigniew Oksiuta ◽  
Nadine L. Baluc
Keyword(s):  
Mechanical Properties ◽  
Uniform Elongation ◽  
Hot Isostatic Pressing ◽  
Charpy Impact ◽  
Oxide Dispersion Strengthened ◽  
Total Elongation ◽  
Nano Particles ◽  
Ferritic Steels ◽  
Ods Steel ◽  
Microstructure And Mechanical Properties

Six oxide dispersion strengthened (ODS) ferritic steels, with the composition of Fe-(12-14)Cr-2W-(0.1-0.3-0.5)Ti-0.3Y2O3 (wt.%), have been prepared by mechanically alloying elemental powders of Fe, Cr, W, and Ti with Y2O3 nano-particles followed by hot isostatic pressing. The influence of the chemical composition on the microstructure and mechanical properties of various materials was studied. It was found that the chromium content has a significant influence on the microstructure and mechanical properties of the compacted ingots. The 14Cr ODS steel exhibits slightly higher ultimate tensile strength and yield strength values than the 12Cr ODS steel. The total elongation and uniform elongation of both materials, in general, decrease with raising the test temperature, although in the case of the 12Cr ODS steel the elongation is about 30% higher than that of the 14Cr ODS material. In what concerns the effect of titanium content it can be concluded that variations between 0.1 and 0.3% have no visible effects on the microstructure and Charpy impact properties of compacted specimens. However, the microstructure of specimens with 0.5%Ti contains large TiO2 particles with a size in the range of 50-500nm, which have detrimental influence on the mechanical properties of that material.

Effect of In Situ Nano-Particles on the Microstructure and Mechanical Properties of Ferritic Steel

2016 ◽  
Vol 87 (11) ◽  
pp. 1389-1394 ◽  
Author(s):  
Yawei Niu ◽  
Hao Tang ◽  
Yanlin Wang ◽  
Xiaohua Chen ◽  
Zidong Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ferritic Steel ◽  
Nano Particles ◽  
Microstructure And Mechanical Properties

Effect of SiC nano-particles on microstructure and mechanical properties of the CoCrFeMnNi high entropy alloy

2017 ◽  
Vol 708 ◽  
pp. 344-352 ◽  
Author(s):  
Łukasz Rogal ◽  
Damian Kalita ◽  
Anna Tarasek ◽  
Piotr Bobrowski ◽  
Frank Czerwinski
Keyword(s):  
Mechanical Properties ◽  
Nano Particles ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Microstructure And Mechanical Properties

scholarly journals Effects of SiC wt% Content on Microstructure and Mechanical Properties of Al/SiC Nano Composite produced by Mechanical Alloying, Sintering and Milling

2020 ◽  
Author(s):  
Najmeddin Arab
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
New Technologies ◽  
Pure Aluminum ◽  
High Energy ◽  
Mechanical Tests ◽  
Nano Particles ◽  
Cylindrical Shape ◽  
Microstructure And Mechanical Properties ◽  
Nanocomposite Powders

Nano Silicon carbide reinforced aluminum (Al/nanoSiC) metal matrix composites are attractive because of their superior properties such as high strength and stiffness, Application of aluminum in technological and structural application is growing steadily. The major limitation for metal matrix nano composites, however, is their propensity to brittle fracture. The new technologies and new materials are two basic aims for companies. In this research, the effect of addition Al/SiC nano particles on microstructure and mechanical properties of pure aluminum has been investigated. Pure aluminum powder and various fractions of SiC particles with an average diameter of 50 nm were milled by a high-energy planetary ball mill to produce nanocrystalline Al–SiC nanocomposite powders. Pressing and sintering applied to consolidate powders to tablet shape. Then the samples were rolled to cylindrical shape. The nano SiC Percentage were 0%, 2.5%, 5%, 7.5%, 10% , 12,5% and 15%. Mechanical tests such as tensile, hardness, fracture toughness and young’s modules measurement carried out to study the mechanical behavior of each alloy. Scanning electron microscopy was used to study the morphology and microstructure of nanocomposite powders and bulk samples. The role of wt% fraction of SiC nanoparticles was investigated. The results shows that the addition of SiC nano particles has significant influence on the microstructure and mechanical properties of composites and usually the optimum properties depends on wt% SiC.

Microstructure and mechanical properties of Al–Si–Cu–Fe alloy-based ceramic particle-reinforced nanocomposites and microcomposites and a modified model to predict the yield strength of nanocomposites

2021 ◽  
pp. 146442072110099
Author(s):  
Ege A Diler
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Analytical Model ◽  
Volume Fraction ◽  
Nano Particles ◽  
Matrix Composites ◽  
Casting Method ◽  
Modified Model ◽  
Micro Particles ◽  
Microstructure And Mechanical Properties

The effects of volume fraction, size, and type of reinforcement particles on the microstructure and mechanical properties of Al–Si–Cu–(Fe) alloy matrix composites were investigated and an analytical model was modified to predict the yield strength of the particle-reinforced nanocomposites. Nano- and micro-particle-reinforced Al–Si–Cu-(Fe) matrix composites (N-AMCs and M-AMCs) were manufactured by adding two different types and sizes of reinforcement particles to Al–Si–Cu–(Fe) alloys at different volume fractions using a two-step stir casting method combined with a high-energy ball milling process and a high-pressure die-casting method. Microstructural analyzes of N-AMCs and M-AMCs were performed using SEM, EDX, and XRD. The Brinell hardness test and the tensile test were carried out to determine the mechanical properties of the N-AMCs and M-AMCs. The hardness of the N-AMCs and M-AMCs was continuously enhanced by increasing the volume fraction of the reinforcement particles, while the yield strength and ultimate tensile strength of the N-AMCs and M-AMCs were improved up to 1.5 vol.% and 4 vol.% of nano-particles and micro-particles, respectively. An analytical model was modified to predict the yield strength of N-AMCs by integrating the effective volume ratio of nano-particles into each strengthening mechanism. The results predicted by the modified model reached nearly 98% agreement with the experimental results up to 1.5 vol.% of the reinforcement particles. Nano-particles had a much greater effect on strengthening mechanisms compared to micro-particles.

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